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Finding the Fourth Proportional to 60,479.80, 90,719.70 and 53,798.20

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Solution

The fourth proportional to 60,479.80, 90,719.70 and 53,798.20 is: 80,697.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,479.80 : 90,719.70 = 53,798.20 : x
  2. Step 2: Convert to fraction form
    60,479.80/90,719.70 = 53,798.20/x
  3. Step 3: Cross multiply
    60,479.80x = 90,719.70 × 53,798.20
  4. Step 4: Simplify right side
    60,479.80x = 4,880,556,564.54
  5. Step 5: Solve for x
    x = 4,880,556,564.54/60,479.80
  6. Step 6: Final answer
    x = 80,697.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.